AWS Cognito Identity JS: Forget/Remember/Do Not Remember Device

问题

I'm working with the AWS Cognito Identity JS SDK (https://github.com/aws/amazon-cognito-identity-js) and I'm trying to set up a few buttons to test the setDeviceStatusRemembered, setDeviceStatusNotRemembered, and forgetDevice functionality but I keep getting an error saying:

MissingRequiredParameter: Missing required key 'DeviceKey' in params

Here is an implementation of one of the functions:

forgetDevice = function(){

var cognitoUser = userPool.getCurrentUser();

if (cognitoUser != null) {
    cognitoUser.getSession(function(err, session) {
        if (err) {
            alert(err);
            signOut();
            return;
        }

        console.log('session validity: ' + session.isValid());

        cognitoUser.forgetDevice({
            onSuccess: function (result) {
                console.log('call result: ' + result);
            },
            onFailure: function(err) {
                alert(err);
            }
        });
    });
  } 
}

If I change up the function like this:

forgetDevice = function(cognitoUser){
    cognitoUser.forgetDevice({
        onSuccess: function (result) {
            console.log('call result: ' + result);
        },
        onFailure: function(err) {
            alert(err);
        }
    });
}

and I call the function from the cognitoUser.authenticateUser success callback function, passing cognitoUser as argument into the forgetDevice function above everything works perfectly.

From looking at the session object in the first implementation it appears that the session object does not contain the DeviceKey property so the cognitoUser.forgetDevice() call fails.

What I'm trying to figure out is, should I just be calling the setDeviceStatusRemembered, setDeviceStatusNotRemembered, and forgetDevice functions on login, or should I be able to call them any time within my application? Hopefully that makes sense. Any help would be greatly appreciated. Thanks!

回答1:

Does this help:

Note that if device tracking is enabled for the user pool with a setting that user opt-in is required, you need to implement an onSuccess(result, userConfirmationNecessary) callback, collect user input and call either setDeviceStatusRemembered to remember the device or setDeviceStatusNotRemembered to not remember the device.

http://docs.aws.amazon.com/cognito/latest/developerguide/amazon-cognito-user-pools-device-tracking.html

Also can you attempt calling getCachedDeviceKeyAndPassword to populate the deviceKey in the CognitoUser object?

来源：https://stackoverflow.com/questions/44792164/aws-cognito-identity-js-forget-remember-do-not-remember-device

标签

javascript

amazon-web-services

amazon-cognito

aws-cognito